阅读说明：本技术 陶瓷结构件的制作方法和移动终端 (Manufacturing method of ceramic structural member and mobile terminal ) 是由 李�杰 于 2019-03-04 设计创作，主要内容包括：本申请涉及一种陶瓷结构件的制作方法和移动终端,陶瓷结构件的制作方法包括：S110,采用第一陶瓷粉末制备第一素坯；S120,在第一素坯的表面丝印第二陶瓷粉末形成网格结构,所述第二陶瓷粉末的色相与所述第一陶瓷粉末的色相相异；S130,采用第三陶瓷粉末制备第三素坯,将第三素坯叠设于网格结构的背向所述第一素坯的一侧,冷等静压,制得陶瓷坯体；S140,将陶瓷坯体排胶、烧结制得陶瓷结构件。用户能够通过陶瓷结构件的两侧的表面观察到网状结构形成的裂纹釉效果,对陶瓷结构件具有装饰效果,提升陶瓷结构件的美感。且陶瓷结构件的两侧的表面均为陶瓷,表现为光洁、高亮的陶瓷质感,手感较好,且耐磨性较强。(The application relates to a manufacturing method of a ceramic structural part and a mobile terminal, wherein the manufacturing method of the ceramic structural part comprises the following steps: s110, preparing a first biscuit by adopting first ceramic powder; s120, silk-screening second ceramic powder on the surface of the first biscuit to form a grid structure, wherein the hue of the second ceramic powder is different from that of the first ceramic powder; s130, preparing a third biscuit by adopting third ceramic powder, overlapping the third biscuit on one side of the grid structure, which is back to the first biscuit, and carrying out cold isostatic pressing to obtain a ceramic blank body; and S140, removing the glue from the ceramic blank and sintering to obtain the ceramic structural member. The user can observe the crack glaze effect that network structure formed through the surface of ceramic structure's both sides, has decorative effect to ceramic structure, promotes ceramic structure's aesthetic feeling. And the surfaces of the two sides of the ceramic structural member are made of ceramics, and the ceramic structural member has smooth, bright and bright ceramic texture, good hand feeling and strong wear resistance.)

1. A method of making a ceramic structural member, comprising:

s110, preparing a first biscuit by adopting first ceramic powder;

s120, silk-screening second ceramic powder on the surface of the first biscuit to form a grid structure, wherein the hue of the second ceramic powder is different from that of the first ceramic powder;

s130, preparing a third biscuit by adopting third ceramic powder, overlapping the third biscuit on one side of the grid structure, which is back to the first biscuit, and carrying out cold isostatic pressing to obtain a ceramic blank body;

and S140, removing the glue from the ceramic blank and sintering to obtain the ceramic structural member.

2. The method of claim 1, wherein the first and third green bodies are formed by tape casting, dry pressing, or powder injection molding.

3. The method of claim 2, wherein the dry-pressing pressure is 90MPa to 110MPa, and the dwell time is 1s to 2 s.

4. The method of manufacturing a ceramic structural member according to claim 1, wherein the first biscuit has a thickness of 0.2mm to 0.8 mm; the thickness of the third biscuit is 0.2 mm-0.8 mm.

5. The method of claim 1, wherein the first ceramic powder comprises one or more of zirconia, yttria, and alumina.

6. The method of claim 5, wherein the first ceramic powder comprises one or more of Co, Mn, Fe, Cu, and Ti.

7. The method of claim 1, wherein in step S120, the grid structure is grid lines, the width of the grid lines is 0.05mm to 1.0mm, the thickness of the grid lines is 0.05mm to 0.2mm, and the area of the grid surrounded by the grid lines is 5mm²～100mm²。

8. The method of claim 1, wherein in step S120, the lattice structure is a lattice block, the thickness of the lattice block is 0.05mm to 0.2mm, and the area of the lattice block is 5mm²～100mm²And the distance between the adjacent grid blocks is 0.05 mm-1.0 mm.

9. The method of manufacturing a ceramic structural member according to claim 1, wherein a pressure of the cold isostatic pressing is 250 to 350MPa, and a pressure holding time is 10 to 15min in S130.

10. The method for manufacturing the ceramic structural member according to claim 1, wherein in the step S140, the glue discharging temperature is 350-400 ℃; the sintering temperature is not lower than 1250 ℃.

11. The method of claim 1, wherein the portion of the ceramic structure produced from the first biscuit has a light transmittance of 10% to 50%; the light transmittance of the part of the ceramic structural member prepared from the third biscuit is 10-50%.

12. A mobile terminal, characterized by comprising the ceramic structural member manufactured by the method for manufacturing a ceramic structural member according to any one of claims 1 to 11.

Technical Field

The application relates to the technical field of mobile terminals, in particular to a manufacturing method of a ceramic structural part and a mobile terminal.

Background

The texture of the ceramic is better, and the ceramic is more and more popular to be used on mobile terminals. For beauty, a surface coating layer is often arranged on the surface of the ceramic structural member to present a crack glaze effect, so that the surface of the ceramic structural member is concave and convex, and the texture, the smoothness and the hand feeling of the ceramic are lost.

Disclosure of Invention

In a first aspect of the present application, an embodiment provides a method for manufacturing a ceramic structural member, so as to solve the technical problem that the ceramic structural member loses ceramic texture, smoothness and hand feeling due to the surface coating layer.

A method of making a ceramic structural member, comprising:

s110, preparing a first biscuit by adopting first ceramic powder;

s120, silk-screening second ceramic powder on the surface of the first biscuit to form a grid structure, wherein the hue of the second ceramic powder is different from that of the first ceramic powder;

s130, preparing a third biscuit by adopting third ceramic powder, overlapping the third biscuit on one side of the grid structure, which is back to the first biscuit, and carrying out cold isostatic pressing to obtain a ceramic blank body;

and S140, removing the glue from the ceramic blank and sintering to obtain the ceramic structural member.

According to the manufacturing method of the ceramic structural member, the second ceramic powder silk-screen grid structure with the color different from that of the first biscuit is adopted on the first biscuit, the third biscuit is stacked on one side of the grid structure, which is back to the first biscuit, and the ceramic structural member is manufactured through cold isostatic pressing, binder removal and sintering. The user can observe the crack glaze effect that network structure formed through the surface of ceramic structure's both sides, has decorative effect to ceramic structure, promotes ceramic structure's aesthetic feeling. And the surfaces of the two sides of the ceramic structural member are made of ceramics, and the ceramic structural member has smooth, bright and bright ceramic texture, good hand feeling and strong wear resistance.

In one embodiment, the first and third biscuits are prepared using tape casting or dry compression molding or powder injection molding.

In one embodiment, the dry pressure of the dry pressing molding is 90MPa to 110MPa, and the dwell time is 1s to 2 s.

In one embodiment, the first biscuit has a thickness of 0.2mm to 0.8 mm; the thickness of the third biscuit is 0.2 mm-0.8 mm.

In one embodiment, the first ceramic powder comprises one or more of zirconia, yttria, alumina.

In one embodiment, the first ceramic powder includes one or more of Co element, Mn element, Fe element, Cu element, Ti element.

In one embodiment, in S120, the grid structure is grid lines, the width of the grid lines is 0.05mm to 1.0mm, the thickness of the grid lines is 0.05mm to 0.2mm, and the area of the grid surrounded by the grid lines is 5mm2 to 100mm 2.

In one embodiment, in S120, the grid structure is grid blocks, the thickness of each grid block is 0.05mm to 0.2mm, the area of each grid block is 5mm2 to 100mm2, and the distance between adjacent grid blocks is 0.05mm to 1.0 mm.

In one embodiment, in S130, the cold isostatic pressing pressure is 250MPa to 350MPa, and the dwell time is 10min to 15 min.

In one embodiment, in S140, the glue discharging temperature is 350-400 ℃; the sintering temperature is not lower than 1250 ℃.

In one embodiment, the portion of the ceramic structural member made from the first green body has a light transmittance of 10% to 50%; the light transmittance of the part of the ceramic structural member prepared from the third biscuit is 10-50%.

In a second aspect of the present application, an embodiment provides a mobile terminal to solve the technical problem that the surface coating layer causes the ceramic structural member to lose ceramic texture, smoothness and hand feel.

The mobile terminal comprises the ceramic structural part prepared by the manufacturing method of the ceramic structural part.

The mobile terminal comprises a ceramic structural member, and the manufacturing method of the ceramic structural member comprises the steps of adopting a second ceramic powder silk-screen grid structure with the color different from that of a first biscuit on the first biscuit, overlapping a third biscuit on one side of the grid structure, which is back to the first biscuit, and carrying out cold isostatic pressing and binder removal sintering to obtain the ceramic structural member. The user can observe the crack glaze effect that network structure formed through the surface of ceramic structure's both sides, has decorative effect to ceramic structure, promotes ceramic structure's aesthetic feeling. And the surfaces of the two sides of the ceramic structural member are made of ceramic, the ceramic structural member has smooth and bright ceramic texture, good hand feeling and strong wear resistance, so that the appearance expressive force and the wear resistance of the mobile terminal are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of a mobile terminal according to an embodiment;

fig. 2 is a front view of a battery cover of the mobile terminal shown in fig. 1;

FIG. 3 is a flow chart of the manufacturing process of the battery cover shown in FIG. 2;

FIG. 4 is a cross-sectional view of a first blank used to make a battery cover according to one embodiment;

FIG. 5 is a cross-sectional view of a first blank and web structure used to make a battery cover according to one embodiment;

FIG. 6 is a top view of the structure shown in FIG. 5;

fig. 7 is a cross-sectional view of a ceramic blank for making a battery cover according to one embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As used herein, "terminal device" refers to a device capable of receiving and/or transmitting communication signals including, but not limited to, devices connected via any one or more of the following connections:

(1) via wireline connections, such as via Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connections;

(2) via a Wireless interface means such as a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter.

A terminal device arranged to communicate over a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

(1) satellite or cellular telephones;

(2) personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities;

(3) radiotelephones, pagers, internet/intranet access, Web browsers, notebooks, calendars, Personal Digital Assistants (PDAs) equipped with Global Positioning System (GPS) receivers;

(4) conventional laptop and/or palmtop receivers;

(5) conventional laptop and/or palmtop radiotelephone transceivers, and the like.

As shown in fig. 1 and 2, in one embodiment, a mobile terminal 10 is provided, and the mobile terminal 10 may be a smartphone, a computer, or a tablet. The mobile terminal 10 includes a display assembly 200, a ceramic structure, a middle frame 300, and a circuit board, and in this application, the battery cover 100 is taken as an example to describe the ceramic structure. It is understood that the ceramic structural member may also be a middle frame 300, a key, a camera head decorative ring, a fingerprint decorative ring, etc.; in another embodiment, the ceramic structural member may be integrated with the middle frame 300 and the rear cover of an integrally formed fuselage (unibody) structure. The display screen assembly 200 and the battery cover 100 are respectively fixed to two sides of the middle frame 300, the display screen assembly 200, the middle frame 300 and the battery cover 100 together form an external structure of the mobile terminal 10, the circuit board is located inside the mobile terminal 10, and electronic elements such as a controller, a storage unit, a power management unit, a baseband chip and the like are integrated on the circuit board. The display screen assembly 200 is used to display pictures or fonts, and the circuit board may control the operation of the mobile terminal 10.

In one embodiment, the Display panel assembly 200 uses an LCD (Liquid Crystal Display) panel for displaying information, and the LCD panel may be a TFT (Thin Film Transistor) screen or an IPS (In-Plane Switching) screen or an SLCD (split Liquid Crystal Display) screen. In another embodiment, the display panel assembly 200 employs an OLED (Organic Light-Emitting display) panel for displaying information, and the OLED panel may be an AMOLED (Active Matrix Organic Light-Emitting Diode) screen or a Super AMOLED (Super Active Matrix Organic Light-Emitting Diode) screen or a Super AMOLED Plus (Super Active Matrix Organic Light-Emitting Diode) screen. Under the control of the controller, the display screen assembly 200 can display information and can provide an operation interface for a user.

As shown in fig. 2, in one embodiment, the battery cover 100 has a crack glaze effect. The crack glaze effect of the battery cover 100 can be observed from one side of the inner or outer surface of the battery cover 100, so that the battery cover 100 has a stereoscopic aesthetic sense.

As shown in fig. 3, in one embodiment, a method for manufacturing a battery cover 100, which is a ceramic structural member, is provided, and includes:

s110, preparing a first biscuit 110 by adopting first ceramic powder;

s120, silk-screening second ceramic powder on the surface of the first biscuit 110 to form a grid structure 120, wherein the hue of the second ceramic powder is different from that of the first ceramic powder;

s130, preparing a third biscuit 130 by adopting third ceramic powder, overlapping the third biscuit 130 on one side of the grid structure 120, which is back to the first biscuit 110, and carrying out cold isostatic pressing to obtain a ceramic blank;

and S140, removing the glue from the ceramic blank and sintering to obtain the ceramic structural member.

As shown in FIG. 4, in one embodiment, a first green body 110 is prepared using a first ceramic powder. The first ceramic powder includes one or more of zirconia, yttria and alumina, and the first ceramic powder may be white, and in another embodiment, one or more oxides of Co element, Mn element, Fe element, Cu element and Ti element may be added to the first ceramic powder, so that the first ceramic powder has a corresponding color. Uniformly mixing the first ceramic powder with a high polymer compound such as an adhesive, a dispersant, a plasticizer, a corresponding solvent and the like, and preparing a first biscuit 110 through tape casting, dry pressing or powder injection molding, wherein the first biscuit 110 is white or colored, the thickness of the first biscuit 110 is 0.2-0.8 mm, and the mass percentage of the adhesive is 2-5%. The dry pressure intensity of the dry pressing molding is 90 MPa-110 MPa, and the pressure maintaining time is 1 s-2 s.

As shown in fig. 5 and 6, in an embodiment, a grid structure 120 with crack effect is prepared on the surface of the first blank 110 by silk-screen printing. In one embodiment, the grid structure 120 is a grid line, the second ceramic powder having a different color from the first ceramic powder forms a grid line on the surface of the first biscuit 110, the width of the grid line is 0.05mm to 1.0mm, the thickness of the grid line is 0.05mm to 0.2mm, and the area of the grid surrounded by the grid line is 5mm²～100mm². It is understood that the second ceramic powder may have added thereto a polymer compound such as a binder, a dispersant, a plasticizer, and a corresponding solvent for molding the ceramic. The first biscuit 110 contains a bonding agent, the second ceramic powder has certain viscosity, and the grid lines can be positioned after being silkscreened on the surface of the first biscuit 110 and cannot be displaced under the subsequent normal operation condition. In another embodiment, the lattice structure 120 is a lattice block, and the second ceramic powder having a different color from the first ceramic powder forms a lattice block on the surface of the first green body 110, with the lattice lines being left blank. The thickness of the grid block is 0.05 mm-0.2 mm, and the area of the grid block is 5mm²～100mm²The distance between adjacent grid blocks is 0.05 mm-1.0 mm, namely the width of the blank grid lines is 0.05 mm-1.0 mm. The grid blocks are in irregular shapes, or in the shapes of triangles, squares, circles and the like.

In one embodiment, a third ceramic powder is used to prepare the third green body 130. The third ceramic powder includes one or more of zirconia, yttria and alumina, and the third ceramic powder may be white, and in another embodiment, one or more oxides of Co element, Mn element, Fe element, Cu element and Ti element may also be added to the third ceramic powder, so that the third ceramic powder has a corresponding color. And uniformly mixing the third ceramic powder with a polymer compound such as an adhesive, a dispersant, a plasticizer, a corresponding solvent and the like, and preparing a third biscuit 130 by tape casting, dry pressing or powder injection molding, wherein the third biscuit 130 is white or colored, the color of the third biscuit 130 can be the same as or different from that of the first biscuit 110, the thickness of the third biscuit 130 is 0.2-0.8 mm, and the mass percentage of the adhesive is 2-5%. The dry pressure intensity of the dry pressing molding is 90 MPa-110 MPa, and the pressure maintaining time is 1 s-2 s.

In one embodiment, as shown in fig. 7, the third green body 130 is stacked on a side of the lattice structure 120 facing away from the first green body 110, and the first green body 110, the lattice structure 120, and the third green body 130 are stacked together by cold isostatic pressing to form a ceramic green body. The pressure intensity of the cold isostatic pressing is 250 MPa-350 MPa, and the pressure maintaining time is 10 min-15 min. The ceramic blank prepared by cold isostatic pressing has uniform structure and no pores or looseness inside.

In one embodiment, the ceramic green body is de-glued, sintered, and post-processed to produce the battery cover 100. Wherein the binder removal temperature is 350-400 ℃, and the sintering temperature is not lower than 1250 ℃. The battery cover 100 manufactured under the process parameters can achieve the states of minimum air holes, maximum shrinkage, most compact product and best performance. And post-processing comprises CNC grinding, polishing and surface quality detection. The light transmittance of the portion of the battery cover 100 made of the first biscuit 110 is 10% to 50%, the light transmittance of the portion of the battery cover 100 made of the third biscuit 130 is 10% to 50%, and a user can observe a crack glaze effect formed by a net structure through the surfaces of both sides of the battery cover 100, thereby having a decorative effect on the battery cover 100 and improving the aesthetic feeling of the battery cover 100. And the surfaces of the two sides of the battery cover 100 are made of ceramics, and have smooth, bright and bright ceramic texture, good hand feeling and strong wear resistance.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.